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Equity-Accounted Investments And Other Long-Term Assets (Summary Of Unrealized Gain (Loss) On Investments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Jun. 30, 2021
Schedule Of Equity And Held To Maturity Investments [Line Items] |  |
Cost basis | $ 26,993 | $ 26,993
Unrealized holding gains | 49,304 | 49,304
Unrealized holding losses | 0 | 0
Carrying value | 76,297 | 76,297
MobiKwik [Member] |  |
Schedule Of Equity And Held To Maturity Investments [Line Items] |  |
Cost basis | 26,993 | 26,993
Unrealized holding gains | 49,304 | 49,304
Unrealized holding losses | 0 | 0
Carrying value | 76,297 | 76,297
Cedar Cellular [Member] |  |
Schedule Of Equity And Held To Maturity Investments [Line Items] |  |
Cost basis | 0 | 0
Unrealized holding gains | 0 | 0
Unrealized holding losses | 0 | 0
Carrying value | 0 | 0
CPS [Member] |  |
Schedule Of Equity And Held To Maturity Investments [Line Items] |  |
Cost basis | 0 | 0
Unrealized holding gains | 0 | 0
Unrealized holding losses | 0 | 0
Carrying value | $ 0 | $ 0

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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
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